package thinkingInJava.containers;
// page 463 测试填充工具类的使用
//: containers/MapDataTest.java
import java.util.*;
import static thinkingInJava.YTool.YPrint.*;
import thinkingInJava.arrays.*;
//import thinkingInJava.arrays.Generator;
import thinkingInJava.ClassInfo.PetCount_.*;

class Letters implements Generator<Pair<Integer,String>>,
Iterable<Integer> {
private int size = 9;
private int number = 1;
private char letter = 'A';
public Pair<Integer,String> next() {
  return new Pair<Integer,String>(
    number++, "" + letter++);
}
public Iterator<Integer> iterator() {
  return new Iterator<Integer>() {
    public Integer next() { return number++; }
    public boolean hasNext() { return number < size; }
    public void remove() {
      throw new UnsupportedOperationException();
    }
  };
}
}

public class MapDataTest {
public static void main(String[] args) {
  // Pair Generator:
  print(MapData.map(new Letters(), 11));
  // Two separate generators:
  print(MapData.map(new CountingGenerator.Character(),
    new RandomGenerator.String(3), 8));
  // A key Generator and a single value:
  print(MapData.map(new CountingGenerator.Character(),
    "Value", 6));
  // An Iterable and a value Generator:
  print(MapData.map(new Letters(),
    new RandomGenerator.String(3)));
  // An Iterable and a single value:
  print(MapData.map(new Letters(), "Pop"));
}
} /* Output:
{1=A, 2=B, 3=C, 4=D, 5=E, 6=F, 7=G, 8=H, 9=I, 10=J, 11=K}
{a=YNz, b=brn, c=yGc, d=FOW, e=ZnT, f=cQr, g=Gse, h=GZM}
{a=Value, b=Value, c=Value, d=Value, e=Value, f=Value}
{1=mJM, 2=RoE, 3=suE, 4=cUO, 5=neO, 6=EdL, 7=smw, 8=HLG}
{1=Pop, 2=Pop, 3=Pop, 4=Pop, 5=Pop, 6=Pop, 7=Pop, 8=Pop}
*///:~
